<template>
  <transition name="slide">
    <music-list :rank="rank" :title="title" :bgImage="bgImage" :songs="songs"></music-list>
  </transition>
</template>

<script type="text/ecmascript-6">
import MusicList from 'components/music-list/music-list'
import {getMusicList} from 'api/rank'
import {ERR_OK} from 'api/config'
import {mapGetters} from 'vuex'
import {createSong} from 'common/js/song'
import {getMusic} from 'api/singer'
export default {
  computed: {
    title() {
      return this.topList.topTitle
    },
    bgImage() {
      if (this.songs.length) {
        return this.songs[0].image
      }
      return ''
      // return this.topList.picUrl
    },
    ...mapGetters([
      'topList'
    ])
  },
  created() {
    this._getMusicList()
  },
  data() {
    return {
      songs: [],
      rank: true
    }
  },
  methods: {
    _getMusicList() {
      if (!this.topList.id) {
        this.$router.push('/rank')
        return
      }
      getMusicList(this.topList.id).then((res) => {
        if (res.code === ERR_OK) {
          this.songs = this._normalizeSongs(res.songlist)
        }
      })
    },
    _normalizeSongs(list) {
      let ret = []
      list.forEach((item) => {
        const musicData = item.data
        // console.log(musicData)
        if (musicData.songid && musicData.albumid) {
          getMusic(musicData.songmid).then((res) => {
            // console.log(res)
            if (res.code === ERR_OK) {
              // console.log(res.data)
              const svkey = res.data.items
              const songVkey = svkey[0].vkey
              const newSong = createSong(musicData, songVkey)
              ret.push(newSong)
            }
          })
        }
      })
      return ret
    }
  },
  components: {
    MusicList
  }
}
</script>

<style scoped lang="stylus" rel="stylesheet/stylus">
.slide-enter-active, .slide-leave-active {
  transition: all 0.3s ease;
}

.slide-enter, .slide-leave-to {
  transform: translate3d(100%, 0, 0);
}
</style>